1 / 10

What is she doing?

?. What is she doing?. Injection. What is inside the syringe?. ?. Insulin. What disease does she has?. ?. Diabetes. Extension. Regulation of blood glucose level. More insulin is secreted (1) more glucose is converted to glycogen in liver (2) more glucose is oxidized in body cells.

tlynn
Download Presentation

What is she doing?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. ? What is she doing? Injection What is inside the syringe? ? Insulin What disease does she has? ? Diabetes

  2. Extension Regulation of blood glucose level More insulin is secreted (1) more glucose is converted to glycogen in liver (2) more glucose is oxidized in body cells High blood glucose level Blood glucose level falls Normal blood glucose level Low blood glucose level Less insulin is secreted (1) more glycogen in liver is converted to glucose (2) less glucose is oxidized in body cells Blood glucose level rises

  3. Extension What is Insulin? Insulin is a kind of hormone. What are hormones? • chemicals secreted by ductless endocrine glands transported in blood e.g. Pancreas is the endocrine gland producing insulin. • serve as chemical messengers which act on target organs and regulate body processes e.g. Liver is the target organ that insulin exerts its effect.

  4. Extension Transport of hormones: 2 hormones diffuse into blood 4 cells in specifictarget organsreceive hormones and changes occur 1 secreting cells in endocrine gland secretehormones 3 hormones are transported to all parts of the body

  5. Brief Revision 1 Hormones are secreted by ________________. They act on specific ______________ and regulate body processes. endocrineglands target organs 2 The blood glucose level is regulated by two hormones: _______ and _________ . They control the interconversion of _________ and _________. glucagon insulin glycogen glucose

  6. Extension 16.9 What are the similarities and differences between hormonal and nervous coordination? Endocrine glands & blood Neurones, brain & spinal cord Hormones Nerve impulses Blood stream Nerve fibres

  7. Extension 16.9 What are the similarities and differences between hormonal and nervous coordination? Only in places with nerve supply In more widespread area Slower Rapid Usually long lasting Short term Reproduction, growth, etc. always involuntary Reflex actions and voluntary actions

  8. Extension Examples of endocrine glands Pancreas • produce insulin (胰島素) and glucagon (高血糖素) • they work together to regulate the blood glucose level insulin glucose glycogen glucagon

  9. Extension Examples of endocrine glands Ovaries and testes • produce sex hormones (性激素) which 1 stimulate ovaries to release eggs (卵子) and testes to make sperm (精子) 2 responsible for the development of secondary sexual characteristics(第二性徵)

  10. Extension 16.8 How does hormonal control work?  by a negative feedback mechanism (負反饋機制) balancing action to decrease the level higher level of factors than normal detector normal level of factors negative feedback balancing action to increase the level lower level of factors than normal detector

More Related